Stadion: South Center Court Round: 26
| ITF Damen - Stockton | 2018/10/03 20:55 | Mari Osaka v Maria Sanchez | 6-1,6-3 |
| WTA - Tokio | 2018/09/15 01:00 | Mari Osaka v Antonia Lottner | 3-6,6-4,3-6 |
| ITF Damen - Montreux | 2018/09/07 13:00 | Kimberley Zimmermann v Mari Osaka | 7-5,6-4 |
| ITF Damen - Montreux | 2018/09/06 08:00 | Mari Osaka v Martina Trevisan | 6-3,6-2 |
| ITF Damen - Montreux | 2018/09/04 09:30 | Mari Osaka v Monika Kilnarova | 6-2,6-1 |
| ITF Women Budapest | 2018/08/25 12:40 | Mari Osaka v Maria Marfutina | 1-6,2-6 |
| ITF Damen - Braunschweig | 2018/08/22 09:00 | Anastasia Zarycka v Mari Osaka | 6-4,7-5 |
| ITF Damen - Porto | 2018/07/24 09:30 | Lisa Sabino v Mari Osaka | 6-2,6-1 |
| ITF Damen - Stockton | 2018/10/02 23:00 | Robin Anderson v Kristie Ahn | 6-1,4-6,7-6 |
| ITF Damen - Templeton | 2018/09/26 17:00 | Sesil Karatantcheva v Robin Anderson | 6-2,6-3 |
| ITF Damen - Templeton | 2018/09/25 17:00 | Robin Anderson v Kai-Chen Chang | 3-6,6-3,7-5 |
| ITF Damen - Templeton | 2018/09/24 20:00 | Robin Anderson v Ellie Douglas | 7-5,6-2 |
| ITF Damen - Templeton | 2018/09/24 00:05 | Robin Anderson v Mary Closs | 6-2,6-2 |
| ITF Damen - Lubbock | 2018/09/22 18:00 | Rebecca Marino v Robin Anderson | 6-4,6-1 |
| ITF Damen - Lubbock | 2018/09/21 20:50 | Emina Bektas v Robin Anderson | 7-6,6-7,4-6 |
| ITF Damen - Lubbock | 2018/09/20 18:40 | Bianca Turati v Robin Anderson | 3-6,1-6 |